How to Adjust Volume on Your HT381

You can easily adjust the volume using the Volume Adjustment Wheel on the earphones (receiver).

How to Adjust:

Spin the wheel left to decrease the volume.
Spin the wheel right to increase the volume.

Note: If your transmitter dock is connected to a TV via Optical connection, the TV's built-in volume control may not work. In this case, the Volume Adjustment Wheel is the only way to adjust the volume.

How to Adjust Sound Mode

A. Bass / Treble / Balanced / Default Modes

The HT381 supports four different sound modes, allowing you to personalize your listening experience. The LED indicators on the front of the transmitter dock show the current mode.

How to Switch:

Press the MODE Button on top of the transmitter dock.

Bass Mode: The BASS LED lights up solid Orange
Treble Mode: The TREBLE LED lights up solid Orange
Balanced Mode: The BALANCED LED lights up solid Orange
Default (Flat) Mode: No mode LED lights up

B. Mono vs. Stereo Sound

The HT381 also supports both Mono and Stereo sound modes, letting you choose the best audio experience for your needs.

How to Switch:

Use the Mono/Stereo Switch on the back of the transmitter dock to toggle between modes.

What’s the Difference?

Sound Mode

Mono

Stereo

Feature

The same sound plays in both earbuds.

Useful for those with hearing loss in one ear or who prefer a consistent audio experience.

Each earbud plays a different audio channel, creating a surround sound effect.

Enhancing music, movies, and immersive experiences by separating left and right audio channels.

Example

If you're listening to a song with violin and piano, both instruments will play in each earbud at the same time.

The violin might play in the left ear, while the piano plays in the right ear. The sounds blend naturally, creating a stereo effect.

How to Adjust Sound Balance

The L/R Balance Spinner on the back of the earphones (receiver) lets you control the volume balance between your left and right earbuds.